Inheritance and variability of productivity traits in hybrids of spring soft wheat of the first to fourth generations

The effects of genotype-environment interaction of nine spring soft wheat varieties and seven hybrid populations F1 - F4 formed using these varieties were determined under the conditions of the Kirov region. The significant influence of environmental conditions on all studied traits was established. The contribution of the “year” factor to the number of grains per head in varieties and hybrids was 10.9 and 13.9%, respectively; to the mass of 1000 grains – 5.8 and 19.5%; to the yield – 47.3 and 41.1%. The genetic component made a significant contribution to the mass of 1000 grains in varieties and hybrids (81.5 and 58.8%), as well as to the number of grains in varieties (38.4%). There was a higher varietal specificity in the manifestation of traits in parental varieties compared to the hybrids. The analysis was done for two component traits of head productivity in a series of generations against the background of the action of various lim-factors, the shifts in their average values and the influence on yield were predicted and determined. The indicator of phenotypic domination (hp) in the first generation was determined according to the number of grains per head (hp = -5.00...+ 7.82) and 1000 grains mass (hp = + 0.23...+ 12.00), the combinations with a high level of heterosis were picked out (Baganskaya 95 x Novosibirskaya 44 and Baganskaya 95 x Aktjube 3). The calculation of the breeding differential and the effectiveness of the selections in contrasting environmental conditions of the second (2016) and third (2017) hybrid generations was carried out. Under the conditions of 2018, the yield of the initial populations varied within 219.0...789.6 g/m2, while the figures for the selected progenies were 317.0...647.6 g/m2. The average yield increase of the progenies that had been selected in the dry year was 56.8 g/m2 in relation to the initial populations (11.1%); the increase of the progenies, selected in the conditions of excess moisture was 10.8 g/m2 (3.0%). The correlation analysis revealed the average positive relationship between the first-generation hp indicator and the selection differential in subsequent generations according to the «1000 grains mass» (r = 0.18...0.63) and «number of grains per head» (r = 0.35...0.37) traits. The correlation was weak between the level of heterosis and the selection reaction (r = -0.12…0.27). The selection of genotypes with a high level of selection differential according to the number of grains per head was more effective than the selection according to the mass of 1000 grains. The correlation coefficient between the degree of phenotypic dominance of traits in the first generation and average values of traits in the F2-F4 generations varied within r = 0.35...0.68 (significant values at 5% level r = 0.75).

Triticum aestivum L., variety, hybrid population, heterosis, inheritance, number of grains per head, mass of 1000 grains, yield

1. Kil'chevskiy A.V. Genetiko-ekologicheskie osnovy selektsii rasteniy. [Genetic and ecological bases of plant breeding]. Informatsionnyy vestnik VOGIS. 2005;9(4):518-526. URL: https://elibrary.ru/item.asp?id=9127861

2. Dragavtsev V.A. Uroki evolyutsii genetiki rasteniy. [The resuls of the evolution of plant genetics]. Biosfera. 2012;4(3):251-262. URL: https://elibrary.ru/item.asp?id=17954320

3. Kostylev P.I., Nekrasova O.A. Izuchenie tipov nasledovaniya ryada priznakov myagkoy ozimoy pshenitsy i ee kombinatsionnoy sposobnosti. [The study of the types of inheritance of some traits of winter soft wheat and its combination ability]. Zernovoe khozyaystvo Rossii = Grain Economy of Russia. 2015;(6):10-15. URL: https://elibrary.ru/item.asp?id=25311180

4. Min'kach T.V., Selikhova O.A. Geneticheskiy sdvig pri otbore gibridnykh potomstv soi po khozyaystvennotsennym priznakam. [Genetic shift in selection of hybrid offspring of soybeans according to economically valuable traits]. Rossiyskaya sel'skokhozyaystvennaya nauka = Russian Agricultural Sciences. 2016;(2-3):18-20. URL: https://elibrary.ru/item.asp?id=25717606

5. Maletskiy S.I. Semanticheskaya struktura ponyatiy «nasledstvennost'» i «evolyutsiya». [Semantic structure of the terms «heredity» and «evolution»]. Informatsionnyy vestnik VOGIS. 2009;13(4):820-852. URL: https://elibrary.ru/item.asp?id=16691061

6. Inge-Vechtomov S.G. Chto my znaem ob izmenchivosti? [What do we know about variability?]. Ekologicheskaya genetika = Ecological genetics. 2010;8(4):4-9. URL: https://elibrary.ru/item.asp?id=15554492

7. Piskarev V.V., Pan'kin A.I., Kapko T.N. Izmenchivost', nasledovanie i geneticheskiy kontrol' produktivnosti kolosa sortov yarovoy myagkoy pshenitsy. [Variability, inheritance and genetic control of ear productivity in spring soft wheat cultivars]. Sibirskiy vestnik sel'skokhozyaystvennoy nauki = Siberian Herald of Agricultural Science. 2011;(11-12):40-47. URL: https://elibrary.ru/item.asp?id=17110102

8. Nikitina V.I. Izmenchivost' i nasledovanie massy zerna s kolosa u myagkoy yarovoy pshenitsy v usloviyakh lesostepi Vostochnoy Sibiri. [Variability and inheritance of grain mass per ear of soft spring wheat under conditions of the forest-steppe of Eastern Siberia]. Vestnik KrasGAU = The Bulletin of KrasGAU. 2006;(11):53-59. URL: https://elibrary.ru/item.asp?id=12991766

9. Börner A., Schumann E., Fürste A., Göster H., Leithold B., Röder M.S., Weber W.E. Marring of quantitative trait loci determining agronomic important characters in hexaploid whead (Triticum aestivum L.). Theor. Appl. Genet. 2002;105:921-936. URL: https://link.springer.com/article/10.1007/s00122-002-0994-1

10. Chesnokov Yu. V., Mirskaya G.V., Kanash E.V., Kocherina N.V., Lohwasser U., Börner A. QTL marring of bread wheat (Triticum aestivum L.) grown under controlled conditions of an agroecobiological testing ground. Russian Journal of Plant Physiology. 2017;64 (1):55-68. https://doi.org/10.1134/S1021443716060029

11. Dragavtsev V.A., Maletskiy S.I. Puti «geny-priznaki» neispovedimy. [The relation between genes and traits is inscrutable]. Byulleten' nauki i praktiki = Bulletin of Science and Practice. 2016;(6):12-24. URL: https://elibrary.ru/item.asp?id=26191408

12. Dzyuba V.A., Esaulova L.V., Chukhir' I.N., Lapina E.N. K metodike provedeniya gibridologicheskogo analiza gibridov zernovykh kul'tur. [On the technology of carrying out hybridological analysis of grain crops]. Zernovoe khozyaystvo Rossii = Grain Economy of Russia. 2012;(3(21)):8-13. URL: https://elibrary.ru/item.asp?id=17794893

13. Batalova G.A., Rusakova I.I., Kocherina N.V., Lovasser U., Berner A., Chesnokov Yu.V. Otsenka liniy ITMI i kartirovanie QTL u yarovoy myagkoy pshenitsy (Triticum aestivum L.) v usloviyakh Severo-Vostoka Rossiyskoy Federatsii. [Evalution of ITMI and QTL mapping in spring soft wheat (Triticum aestivum L.) in conditions of the North-East of the European part of Russian Federation]. Kirov: NIISKh Severo-Vostoka, 2016. 52 p. URL: https://search.rsl.ru/ru/record/01008757139

14. Piskarev V.V., Timofeev A.A., Boyko N.I. Krupnost' zerna pshenitsy myagkoy yarovoy: osobennosti formirovaniya i geneticheskiy kontrol' v usloviyakh Zapadnoy Sibiri. [Fineness of soft spring wheat grain: peculiarities of formation and genetic control under conditions of Western Siberia]. Dostizheniya nauki i tekhniki APK = Achievements of Science and Technology of AICis. 2017;31(9):16-21. URL: https://elibrary.ru/item. asp?id=30462590

15. Nekrasova O.A., Kostylev P.I., Nekrasov E.I. Izuchenie tipov nasledovaniya massy 1000 zeren u gibridov F2 ozimoy pshenitsy. [The study of the modes of inheritance of the "1000 grain mass " trait in the hybrids F2 of winter wheat]. Zernovoe khozyaystvo Rossii = Grain Economy of Russia. 2017;(1):20-23. URL: https://elibrary.ru/item.asp?id=28825289

16. Röder M.S., Huang X.Q., Börner A. Fine mapping of the region on wheat chromosome 7D controlling grain weight. Funct. Integr. Genomics. 2008;(8):79-86. URL: http://www.biomedsearch.com/nih/Fine-mappingregion-wheat-chromosome/17554574.html

17. Osipova L.V., Nilovskaya N.T. Formirovanie zachatochnogo kolosa i produktivnost' sortov yarovoy pshenitsy v usloviyakh narastayushchey pochvennoy zasukhi. [Influence of an increasing soil drought on a rudimentary ear and productivity of wheat varieties]. Doklady Rossiyskoy akademii sel'skokhozyaystvennykh nauk = Reports of the Russian Academy of agricultural sciences. 2012;(5):14-15. URL: https://elibrary.ru/item.asp?id=17898534

18. Dontsova A.A. Tipy nasledovaniya priznaka «kolichestvo zeren v kolose» gibridami F1 i F2 yarovogo yachmenya v usloviyakh Rostovskoy oblasti. [Types of inheritance of the «number of grains per ear » trait in spring barley hybrids F1 and F2 in conditions of Rostov region]. Dostizheniya nauki i tekhniki APK = Achievements of Science and Technology of AICis. 2014;28(11):34-36. URL: https://elibrary.ru/item.asp?id=22747750

19. Goncharova Yu.K. Metod zakrepleniya geterozisnogo effekta - realizatsiya na rasteniyakh (k stoletiyu so dnya rozhdeniya V.A. Strunnikova). [Method of fixing the heterotic effect, implementation on plants (devoted to the 100th anniversary of V.A. Strunnikov)]. Ontogenez. 2014;45(6):442-446. URL: https://elibra-ry.ru /item.asp?doi=10.7868/S0475145014060044

20. Xiao J.H., Li J.M., Yuan L.P., Tanksley S.D. Dominance is the major genetic basis of heterosis in rice as revealed by QT. Genetics. 1995;140:745-754. URL: http://www.biomedsearch.com/nih/Dominance-major-geneticbasis-heterosis/7498751.html

21. Yu S.B., Li J.X., Xu C. G., Tan Y.F., Gao Y.J., Li X.H., Zhang Q., Saghai Maroof M.A. Impor-tance ofepistasis as the genetic basis of heterosis in an elite rice hybrid. Proc. Natl. Acad. Sci. USA. 1997;94:9226-9231. URL: http://www.biomedsearch.com/nih/Importance-epistasis-as-genetic-basis/11038567.html